Hearing aid antenna



FIG. 1 is a perspective view of the hearing aid antenna;

FIG. 2 is a left side view of the hearing aid antenna;

FIG. 3 is a bottom view of the hearing aid antenna;

FIG. 4 is a right side view of the hearing aid antenna;

FIG. 5 is a rear view of the hearing aid antenna;

FIG. 6 is a front view of the hearing aid antenna; and,

FIG. 7 is a top view of the hearing aid antenna. 

CLAIM The ornamental design for a hearing aid antenna, as shown and described. 